Concrete is the most widely used building material nowadays for its low cost, good performance and health innocuity as well as being environmental friendly, and conforms to the principle of sustainable development. It is a common understanding that concrete will still occupy the mainstream status of building materials in 21st century.The development of concrete technology once experienced the course of enhancing concrete strength: from low-strength concrete (lower than 15Mpa) to high-strength concrete (50 ～ 80Mpa) , and then to super-high-strength concrete (higher than 100Mpa). Since the 80's of 20~th century, super-high-strength cement-based materials such as MDF (Macro Defect Free Cement), DSP (Densified System Containing Homogenously Arranged Ultra-Fine Particled), CBC (Chemically Bonded Ceramics) of extremely high compressive strength (200 ～ 300 Mpa) and flexural intensity (150 Mpa) appeared.
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